Originally posted by Singh
First ensure you are connected to CCAPI via the Console Manager for CCAPI on the pc to the PS3.
Second start up black ops 2 install 1.19 and head to private match and dont start up nothing or you will freeze.
Now go the GSC studios and connect via ps3 CCAPI, this wont work if your on XMB but only if your in pre lobby on private then it will connect and attach.
Now once you have downloaded your GSC go to your pc and navigate to my documents and you will see a folder called "Black Ops 2 - GSC Studio" open that then you will come to a "Projects" folder open that and drag your folder that contains all the GSC files for example ( Black Ops 2 - GSC Studio - Projects - Modmenu - GSC content.
Once you have accomplished that open up GSC studios ( Make sure its connected) navigate to "Editor" and select "Open Project" and you should see the project you saved in the directory within my documents. Open the project and you will be presented with GSC content.
Now whilst your in Pre-lobby on private navigate to your GSC studio on the pc and go to "Editor" again and this time click "Inject project to target" this will then compile the GSC files via CCAPI to the ps3.
Make sure you dont start up the game as you will freeze, on the bottom left it will say "Compiling" once this is complete it will show a time on there which indicates that the GSC files are loaded and now you can start up the game and your custom lobby shall be in present.
I hope this has helped you and anybody else and if you have any questions do message me cheers.